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Zelante T, Iannitti RG, Cunha C, De Luca A, Giovannini G, Pieraccini G, et al
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Side effects primarily gastrointestinal can be significant and require monitoring
When to Seek Medical Advice About B12 Levels Most individuals taking vitamin B12 supplements as directed do not require routine monitoring of serum levels unless they have specific medical conditions or are receiving treatment for documented deficiency
Its also an antioxidant and some studies have demonstrated that it can protect against memory decline in mice
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